feat: add directives to core

[alvarosabu]

Description

As a developer using TresJS I will like to be able to use directives directly from the core without installing @tresjs/cientos https://cientos.tresjs.org/guide/directives/v-light-helper.html

• v-log
• v-light-helper
• v-always-look-at

Suggested solution

Add them to the core

Alternative

No response

Additional context

No response

Validations

• I agree to follow this project's Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.